The worst thing you did on someone elses computer

What is the worst thing (or things) that you've done to someone's computer? (PC or Mac, or Linux, or any other OS, I really don't care)Mine? Uhhh, I'll wait until some replies flood in.Meh, close enough (20 replies)
I crated this script with made every single icon/shortcut someone presses, it makes the PC shut down. Every single shortcut on a school pc (ops) and there was this glitch so I can apply it to everyone (students, admins, teachers too :D) Teehee, they eventually fixed it.Deleting a few system32 folders on PCs in Best buy and Future Shop.I wonder what happended when some guy opened an ifected file, which was inserted into a server which infected other servers and ended up infecting a school board... (ops, it wasn't me!)

One day I just turned on my brother's computer. It crashed, turned off, wouldn't turn on anymore, and all else I saw was smoke coming out of the hard drive (when I was in 3rd grade, now I'm in 10th; aww good times..)

Deleted System32 on a friend's computer. When he got a new one, I put hardcore gay porn on his desktop and let his parents find it.

I was pissed at a old roommate, so I decided to do a destructive reformat on his computer...he wasn't too happy about it either.

I tricked him into thinking I put a virus into his pc that made his wallpaper a gay porn GIF

I liked to flip the screens and watch people try to figure out how to fix it.Nothing nearly as destructive as you guys apparently.

I did that at Best Buy the other day... for some reason, it took two of the tech guys to figure it out as I watched from down the aisle.... they need new tech guys

I'm not that big of a dick, but I do enjoy taking a screen shot of the desktop, make that his wallpaper and then hide everything.

i made out someones pc was broken and would be cheaper to get a new one then bought the 'broken one' (for parts, i said :) )

I love doing this to people who don't know how to work computer properly.
Take a screenshot of the desktop, delete all the shortcuts, set it as the wallpaper.
They get so mad it's funny.

Viruses, my mother's and a friends....When your new to the net, expect that.

I've created a script to shut down the computer, have made a shortcut in the desktop and changed the icon, it used the Internet Explorer's Icon.
When my friend tried to surf in the net..... his Pc was shutdown hahahaha.
Also I track down mac adress and IPs, then I manage to create a remote desktop, then I can do whatever I want in someone's computer, such as deleting drivers of windows.
Shuting down anoying people's connection and such.
Sending keyloggers XD
Well, nothing so serious.

I used to change the keyboard layouts on the school computers to romanian. Exactly the same as the UK layout, except the Y and the Z are swapped.

oh loony, you really are a terrible one, aren't you?

I deleted the trash bin. Yes, I know it was cruel.

Replying to #16

Just n00bs dunno how to get the Trash Bin back.It's nothin' so serious, unless the PC's owner didn't know how to get it back.

Ofkoz he knew. But wtf moment still was present.

Replying to #18

Hahahaha now I see what you got in mind hahaha
I love when people see their PC and has the expression like "WTF" ahhahahahaha
What about trackin' down msn's password and loggin as the person?

Just remember... do not stay logged into your myspace account when you are at a PC store